Joseph l



J. L. POTTER. WOOD PULLEY.

(N0 Model.)

Patented Mar. 5, 1895.

{u 3 Arrow/Ens WITNESSES:

UNITED STATES PATENT FFICE.

JOSEPH L. POTTER, OF FORT WAYNE, INDIANA, ASSIGNOR TO HENRY G. OLDS, OF SAME PLACE.

wooo PULLEY.

SPECIFICATION forming part of Letters Patent No. 535,340, dated March 5, 1895. Application filed December 31,1894. Serial No. 533,428- (No model.)

To all whom it may concern.-

Be it known that I, J osnrrr L. POTTER, a citizen of the United States, residing at Fort Wayne, in the county of Allen, in the State of Indiana, have invented certain new and useful Improvements in Wood Pulleys; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to improvements in wood pulleys.

The object of my invention is to provide a substantial wood pulley having a non-continuous rim, easily and economically constructed in any desired size, having a single fixed bifurcated and diametrical arm adapted to form half of the hub secured to the rim at three points, and provided with a removable section which fits in the bifurcation of the arm and passes the shaft, is so arranged when in position as to afford a direct grip upon the said shaft thereby securing the principal advantage of a split pulley, and is adapted to be readily and conveniently adjusted into position upon the shaft.

The novel feature of my improvement is the construction and arrangement of the removable section which by forming half the hub and having its inner and extended beyond the shaft enables the operator to secure a firm and direct grip upon the shaft, and thus secures all the advantages of a split pulley, and at the same time is cheaper, more convenient and more durable.

The objects are accomplished by the mechof any proper construction ispreferably made of segmental sections in the usual and well known manner, arranged in consecutive layers. The bifurcated, diametrical and non removable arm 4, of any proper thickness to suit the width of the rim 1, and preferably formed of consecutive sections or layers, is secured at both extremities to the said rim in any proper manner, but preferably built into and forming a part of the said rim in a manner well understood in the art. The said bifurcated non-removable arm is rigidly secured to the said rim at three points as seen in Fig. 1, and is provided upon one of its branches with a half hub for the shaft 3. The said bifurcated arm l is provided upon both sides of the hub with suitabletrans- Verse perforations adapted to receive and se cure the removable clamping or tightening bolts 6, having their ends screw threaded and provided with proper holding nuts, Fig.

1, and also has a radial and longitudinal slot 5 of sufficient width to permit a firm grip ping of the shaft, and which extends nearly to the rim. The said removable and radial section 8 is adapted to properly fit within the bifurcation of the said fixed arm, has a suitable rim section 2 at its outer end, conforming in contour and construction to the said rim 1, and has suitable transverse perforations 7, registering with those of the arm at and adapted to receive the said clamping and securing bolts 6. The said section 8 is extended beyond the shaft 3, preferably about one half of the distance between the shaft and the adjacent portion of the pulley rim, is provided with a half hub arranged at a proper distance from its inner end, and is so constructed that if the said radial slot 5 were diametrically extended it would bisect transversely the said rim, section 2, or practically so, thereby making the outer ends of the branches of said arm of substantially equal size and strength and thus contributing to the strength and durability of the pulley. It is obvious that the rim section 2, of the said removable section 8, might be arranged in line with the inner end thereof, without departing from the spirit of my invention which consists in providing a removable section whose inner end extends beyond the shaft lows: When the said removable section 8 is placed in position in the bifurcation of the fixed arm, which can at all times be readily and conveniently done, the threaded clamping bolts 6 are inserted in the registering transverse perforations and the said nuts are then properly tightened, by which means the said removable section 8 will be rigidly held in place in the said bifurcation, and firmly grip the shaft 3 with any desired degree of friction which the said slot 5 readily permits. I thereby secure a direct grip upon the shaft and by the use of my improvement secure all the advantages of a split pulley.

Having thus described my invention and the manner in which the same is to be employed, what I claim, and desire to secure by Letters Patent, is-

1. In a pulley, a non-continuous rim and a single bifurcated arm with a half hub, said arm being secured to the rim at three points, and a removable section fitting in the bifurcation of the arm, said removable section being provided with a rim section at one end, and with a half hub near the other end, the inner end thereof being extended beyond the hub, and means for securing the parts to gether.

2. In a wood pulley, a non-continuous rim, a removable section adapted to be secured in the bifurcation of a non-removable arm, the said removable section being provided with a rim section at one end and with a half hub near the other end thereof, and means for securing the same in position, the inner end of said removable section being extended beyond the hub, and being so arranged in the bifurcated arm that the outer end portion only is radial to the shaft, for the purpose of strengthening the said arm, and a single bifurcated non-removablearm forming a half hub, and secured to the rim at three points, substantially as described.

Signed by me, at Fort Wayne, Indiana, this 18th day of December, A. D. 1894.

JOSEPH L. POTTER.

Witnesses:

WALTER G. BURNS, NATHANIEL H. BLEDSOE. 

